EP1068289A4 - Composition a base organique - Google Patents

Composition a base organique

Info

Publication number
EP1068289A4
EP1068289A4 EP99906726A EP99906726A EP1068289A4 EP 1068289 A4 EP1068289 A4 EP 1068289A4 EP 99906726 A EP99906726 A EP 99906726A EP 99906726 A EP99906726 A EP 99906726A EP 1068289 A4 EP1068289 A4 EP 1068289A4
Authority
EP
European Patent Office
Prior art keywords
composition
polarity solvent
liquid
cleaning
fluorinated compound
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP99906726A
Other languages
German (de)
English (en)
Other versions
EP1068289A1 (fr
Inventor
Elizabeth A Bivins
Michael E Hayes
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Petroferm Inc
Original Assignee
Petroferm Inc
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Petroferm Inc filed Critical Petroferm Inc
Publication of EP1068289A1 publication Critical patent/EP1068289A1/fr
Publication of EP1068289A4 publication Critical patent/EP1068289A4/fr
Withdrawn legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
    • C11D—DETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL
    • C11D7/00—Compositions of detergents based essentially on non-surface-active compounds
    • C11D7/22—Organic compounds
    • C11D7/26—Organic compounds containing oxygen
    • C11D7/261—Alcohols; Phenols
    • C—CHEMISTRY; METALLURGY
    • C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
    • C11D—DETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL
    • C11D7/00—Compositions of detergents based essentially on non-surface-active compounds
    • C11D7/50—Solvents
    • C11D7/5036—Azeotropic mixtures containing halogenated solvents
    • C11D7/5068—Mixtures of halogenated and non-halogenated solvents
    • C11D7/509—Mixtures of hydrocarbons and oxygen-containing solvents
    • C—CHEMISTRY; METALLURGY
    • C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
    • C11D—DETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL
    • C11D7/00—Compositions of detergents based essentially on non-surface-active compounds
    • C11D7/50—Solvents
    • C11D7/5036—Azeotropic mixtures containing halogenated solvents
    • C11D7/5068—Mixtures of halogenated and non-halogenated solvents
    • C11D7/5095—Mixtures including solvents containing other heteroatoms than oxygen, e.g. nitriles, amides, nitroalkanes, siloxanes or thioethers
    • C—CHEMISTRY; METALLURGY
    • C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
    • C23G—CLEANING OR DE-GREASING OF METALLIC MATERIAL BY CHEMICAL METHODS OTHER THAN ELECTROLYSIS
    • C23G5/00—Cleaning or de-greasing metallic material by other methods; Apparatus for cleaning or de-greasing metallic material with organic solvents
    • C23G5/02—Cleaning or de-greasing metallic material by other methods; Apparatus for cleaning or de-greasing metallic material with organic solvents using organic solvents
    • C23G5/028—Cleaning or de-greasing metallic material by other methods; Apparatus for cleaning or de-greasing metallic material with organic solvents using organic solvents containing halogenated hydrocarbons
    • C23G5/02803—Cleaning or de-greasing metallic material by other methods; Apparatus for cleaning or de-greasing metallic material with organic solvents using organic solvents containing halogenated hydrocarbons containing fluorine
    • C—CHEMISTRY; METALLURGY
    • C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
    • C23G—CLEANING OR DE-GREASING OF METALLIC MATERIAL BY CHEMICAL METHODS OTHER THAN ELECTROLYSIS
    • C23G5/00—Cleaning or de-greasing metallic material by other methods; Apparatus for cleaning or de-greasing metallic material with organic solvents
    • C23G5/02—Cleaning or de-greasing metallic material by other methods; Apparatus for cleaning or de-greasing metallic material with organic solvents using organic solvents
    • C23G5/032—Cleaning or de-greasing metallic material by other methods; Apparatus for cleaning or de-greasing metallic material with organic solvents using organic solvents containing oxygen-containing compounds
    • C—CHEMISTRY; METALLURGY
    • C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
    • C11D—DETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL
    • C11D7/00—Compositions of detergents based essentially on non-surface-active compounds
    • C11D7/22—Organic compounds
    • C11D7/24—Hydrocarbons
    • C—CHEMISTRY; METALLURGY
    • C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
    • C11D—DETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL
    • C11D7/00—Compositions of detergents based essentially on non-surface-active compounds
    • C11D7/22—Organic compounds
    • C11D7/26—Organic compounds containing oxygen
    • C11D7/263—Ethers

Definitions

  • This invention relates to an organic-based composition. More particularly, this invention relates to a composition which is particularly suitable for use in removing contaminants such as oils, particulates, and other soils from substrates and which has other uses, as described below.
  • cleaning compositions with favorable environmental properties, including low ozone depletion potential and low global warming potential.
  • cleaning compositions which are considered now as having unfavorable environmental properties.
  • cleaning compositions are those which contain chlorinated hydrocarbons.
  • chlorinated hydrocarbons present a threat to the environment because such materials are involved in stratospheric ozone depletion. Therefore, alternative cleaning compositions that do not contain chlorinated hydrocarbon solvents are environmentally attractive.
  • Desirable cleaning compositions in addition to being environmentally attractive, should also be safe to the user. Accordingly, they should be nonflammable under the conditions of use and be non-toxic or at the least have very low toxicity.
  • a cleaning composition in addition to being an effective cleaner, must have a combination of desired properties, including being non-ozone- depleting, non-toxic, nonflammable, fast drying, and compatible with the articles being cleaned.
  • Cleaning compositions can be classified broadly as inorganic-based, for example, water-based, and organic-based, for example, hydrocarbon solvent based.
  • the present invention relates to the latter type of cleaning composition, that is, an organic-based composition.
  • U.S. Patent No. 5,531,916 to Merchant discloses a cleaning composition comprising an acyclic aliphatic hydrofluorocarbon and a co-solvent selected from alcohols, esters, ethers, ketones, acetonitrile, and nitromethane. Some of the disclosed compositions are azeotropic.
  • U.S. Patent No. 5,395,548 to Pfahl, Jr. et al. discloses a cleaning composition comprising a low to moderate boiling point, fluorinated or non-fluorinated alcohol and a relatively non-volatile, higher boiling point organic liquid from the terpene family or a high boiling point aprotic solvent.
  • the composition is non-azeotropic, such that, when it is heated, a vapor formed of the alcohol overlies the underlying higher boiling point liquid.
  • U.S. Patent Nos. 5,221,493; 5,176,757; 5,073,290; and 5,073,288 disclose cleaning compositions comprising specified fluorinated compounds mixed with one or more of alcohols, ethers, esters, ketones, and nitrogen-containing organic compounds.
  • the compositions are azeotropic.
  • U.S. Patent No. 5,143,652 to Slinn discloses a cleaning composition comprising a perfluorocarbon, isopropanol and water.
  • U.S. Patent No. 5,055,138 to Slinn discloses a cleaning composition comprising a highly fluorinated organic compound (HFO) and a hydrogen-containing flammable liquid organic solvent. The two components are mostly immiscible. In use, the composition is heated to the boiling point of the HFO. This results in the formation of a nonflammable HFO vapor layer which covers the underlying flammable organic solvent and thereby reduces the fire hazard associated with the flammable solvent.
  • HFO highly fluorinated organic compound
  • U.S. Patent No. 4,828,751 to Kremer discloses a composition for cleaning silicon wafers, the composition consisting essentially of a haloalkylhydrocarbon and a partially fluorinated alcohol.
  • U.S. Patent No. 4,169,807 to Zuber discloses a composition for drying silicon wafers, the composition comprising a perfluorocyclic compound, 1- propanol, and water.
  • U.S. Patent No. 4,276,186 to Bakos et al. discloses a cleaning composition comprising at least about 50% by weight of N-methy1-2-pyrrolidone and at least about 10% by weight of a water miscible alkanolamine.
  • the cleaning composition can contain up to about 35% of other solvents, including for example, aromatic hydrocarbons, cycloaliphatics, ketones, and fluorinated hydrocarbons.
  • the present invention provides a cleaning composition which is nonflammable, non-toxic, compatible with sensitive materials such as plastics and which has the capability of cleaning effectively a wide variety of contaminants from the surfaces of articles without degrading or otherwise affecting adversely the material comprising the surface of the article.
  • the composition of the present invention is useful also as a carrier for one or more other materials which can be deposited on the surface of an article, for example, in the form of a film.
  • an azeotropic nonflammable liquid composition which has cleaning properties, which has an ozone depletion factor of no greater than about 0.15, and which comprises the following volatile constituents, each of which has an ozone depletion factor of no greater than about 0.15: (a) a liquid nonflammable fluorinated compound; (b) a low polarity solvent which is capable of dissolving no greater than about 10% water by volume, preferably no greater than about 0.1%; and (c) a high polarity solvent which is capable of dissolving at least about 10% water by volume.
  • the cleaning composition is substantially free of chlorinated hydrocarbon solvents and preferably contains no chlorinated hydrocarbon solvents.
  • the cleaning composition should be compatible with the substrate on which it is to be used. That is, the composition should not attack or damage the substrate under the conditions of use.
  • the fluorinated compound is selected from the group consisting of fluorocarbons, hydrofluorocarbons, fluoroethers, and hydrofluoroethers
  • the low polarity solvent is selected from the group consisting of n-propyl bromide, terpenes, polymethylsiloxanes, and petroleum solvents
  • the high polarity solvent is selected from the group consisting of low molecular weight alcohols and low molecular weight glycol ethers.
  • the cleaning composition has an ozone depletion factor of about 0 and comprises: (a) from about 50 wt.% to about 80 wt.% of the fluorinated compound; (b) from about 15 wt.% to about 40 wt.% of the liquid low polarity solvent; and (c) from about 3 wt.% to about 12 wt.% of the liquid high polarity solvent.
  • Another aspect of the present invention comprises a process for removing adherent soils from a soiled substrate comprising: (a) contacting the soiled substrate with an azeotropic nonflammable liquid cleaning composition which is compatible with the substrate for a time sufficient to remove the adherent soils, the cleaning composition having an ozone depletion factor of no greater than about 0.15, and comprising the following constituents, each having an ozone depletion factor of no greater than about 0.15: (i) a liquid nonflammable fluorinated compound; (ii) a liquid low polarity solvent which is capable of dissolving no greater than about 10% water by volume, preferably less than about 0.1%; and (iii) a liquid high polarity solvent which is capable of dissolving at least about 10% water by volume; and (b) removing the substrate from the liquid cleaning composition.
  • the cleaning composition contains no chlorinated hydrocarbon solvents.
  • the cleaning method of the present invention may be performed at room temperature or at elevated temperature.
  • Still another aspect of the present invention comprises:
  • the present invention has a number of advantages associated with its use.
  • the present cleaning composition is environmentally attractive in that it is effective in the absence of the use of compounds which contain chlorinated hydrocarbon solvents or other materials which possess high ozone-depletion and/or high global warming potential.
  • the cleaning composition includes embodiments which are particularly suitable for use in cleaning sensitive plastics and elastomers, which are attacked by other cleaning compositions.
  • a further aspect of the present invention comprises a composition which, in addition to the volatile constituents described above, includes also a non-volatile material which is dissolved in the composition and which has certain desired functional properties.
  • Such composition can be used in a method for depositing a non-volatile functional material on a surface comprising applying to the surface said composition, forming on said surface a deposit which includes said material and which is free of said fluorinated compound, the low polarity solvent, and the high polarity solvent by effecting evaporation of the fluorinated compound, the low polarity solvent, and the high polarity solvent.
  • the cleaning composition of the present invention is azeotropic and nonflammable, has an ozone depletion factor of no greater than about 0.15, and is comprised of the following constituents: (a) a liquid nonflammable fluorinated compound; (b) a low polarity solvent; and (c) a high polarity solvent.
  • Each of the components comprising the composition has an ozone depletion factor of no greater than about 0.15, preferably about 0.
  • An important feature of the present invention is that it is azeotropic.
  • An azeotropic composition is a liquid mixture which includes two or more substances that behave like a single substance in that the vapor produced by partial evaporation or distillation of the composition has the same composition as that of the liquid.
  • An azeotropic composition boils at a constant temperature and distills without a substantial change in composition. The constituents comprising the composition are present in amounts such that the composition is azeotropic.
  • the boiling point of an azeotropic composition is generally lower than the boiling point of each of the individual constituents of the composition. It is believed that, for most embodiments of the composition of the present invention, the boiling point will be within the range of from about 120°F (49°C) to about 140°F (60°C) . It should be understood, however, that compositions having boiling points outside of this range can be formulated. Preferred embodiments have a boiling point in the range of from about 125°F (52°C) to about 135°F (57°C) .
  • an azeotropic composition has a constant boiling point, constituents of the azeotropic composition evaporate at essentially the same rate.
  • the constituents of the present azeotropic composition have essentially the same evaporation rate at use conditions, resulting in no preferential evaporation of any one constituent over another.
  • composition of the present invention is nonflammable.
  • nonflam- mable it is meant that the present composition has no flash point.
  • the fluorinated compound constituent is nonflammable in that it has no flash point.
  • various of the other constituents of the composition may have flash points, when each of the nonflammable fluorinated compound, the low polarity solvent, and the high polarity solvent constituents are mixed together to form the composition of the present invention, the resulting composition has no flash point and is, therefore, nonflammable.
  • the vapor produced by partial evaporation or distillation of the composition has substantially the same composition as the liquid.
  • the nonflammable fluorinated compound, the low polarity solvent, and the high polarity solvent are thus each present in the same proportion in the vapor as they are in the liquid composition.
  • the fluorinated compound is present in the cleaning composition (in both the liquid and vapor phase) in a major amount, that is, in an amount greater than each of the other constituents.
  • the cleaning composition of the present invention also has little or no known tendency to cause depletion of the ozone layer. Accordingly, the cleaning composition has an ozone depletion factor of no greater than about 0.15, preferably no greater than about 0.05, and more preferably about 0. Ozone depletion factors are reported in Technical Progress on Protecting the Ozone Layer - Electronics. Degreasing and dry Cleaning Solvents Technical Options report . United Nations Environment Programme (6/30/89) .
  • the cleaning composition of the present invention be substantially free of water.
  • the cleaning composition contains preferably no greater than about five percent by weight of water. More preferably, the composition contains no more than about one percent by weight of water.
  • a water-free cleaning composition is especially preferred. While aqueous systems have certain desirable characteristics, such as ready availability and low costs, cleaning compositions containing water are corrosive to many types of materials that need to be cleaned. Additionally, substrates which are cleaned with water- containing systems are difficult to dry.
  • the nonflammable fluorinated compound functions to render the cleaning composition compatible with sensitive elastomers and other plastics. It has good compatibility with such materials. Accordingly, the fluorinated compound can be used to alter the compatibility of the composition so that it is compatible with sensitive materials, including, for example, plastics.
  • the fluorinated compound generally has poor solvency for most soils and water.
  • the fluorinated compound of the present invention has little or no known tendency to cause depletion of the ozone layer. It is preferred that the fluorinated compound have an ozone depletion factor of no greater than about 0.05, and more preferably of about 0.
  • the fluorinated compound is a liquid at room temperature and may either be perfluorinated or partially fluorinated.
  • perfluorinated it is meant that all the hydrogen atoms attached to the carbon atoms in the backbone of the fluorinated compound have been replaced by fluorine.
  • a partially fluorinated compound there is at least one hydrogen atom attached to a carbon atom in the backbone of the fluorinated compound.
  • the fluorinated compound may also contain other elements, for example, oxygen and/or nitrogen atoms. Typically, the fluorinated compound will contain from 1 to about 15 carbon atoms. It is preferred to use a fluorinated compound having from 4 to about 10 carbon atoms.
  • the fluorinated compound of the present invention is preferably selected from the group consisting of fluorocarbons, hydrofluorocarbons, fluoroethers, and hydrofluoroethers.
  • fluorocarbons hydrofluorocarbons
  • fluoroethers fluoroethers
  • hydrofluoroethers examples include methyl nonafluorobutyl ether, methyl nonafluoroisobutyl ether, 1,1,1,2,3,4,4,5,5,5-decafluoropentane, perfluorohexane, and perfluoroheptane.
  • Preferred embodiments of the present composition contain partially fluorinated compounds.
  • Particularly preferred embodiments include hydrofluoroethers.
  • Especially preferred fluorinated compounds are nonafluorobutyl ether and a mixture of methyl nonafluorobutyl ether and methyl nonafluoroisobutyl ether.
  • the fluorinated compound is present in the composition in an amount greater than the amount of any of the other constituents.
  • the fluorinated compound comprises from about 50 wt.% to about 80 wt.%, and more preferably from about 55 wt.% to about 75 wt.% of the composition.
  • Another constituent of the present cleaning composition is a low polarity solvent.
  • This constituent functions to dissolves oils and hydrocarbon residues and other organic- based residues.
  • the low polarity solvent has little solvency for water and water-like materials and is capable of dissolving no greater than about 10% water by volume.
  • the low polarity solvent of the present invention has little or no known tendency to cause depletion of the ozone layer. It is preferred that the low polarity solvent compounds have an ozone depletion factor of no greater than about 0.05, and even more preferably of about 0.
  • the low polarity solvent of the present composition is preferably selected from the. group consisting of n-propyl bromide, terpenes, polymethylsiloxanes, petroleum solvents, and aliphatic esters, including, for example, monobasic esters and diesters.
  • Preferred embodiments include n-propyl bromide and polymethylsiloxanes.
  • An especially preferred polymethylsiloxane is octamethyltrisiloxane.
  • Various of the preferred low polarity solvents have nominal solvency for water. For example, the literature reports that terpenes are capable of dissolving less than 0.1% by volume of water and that n-propyl bromide and polymethylsiloxanes dissolve even smaller amounts of water. It is preferred that the low polarity solvent be a material which is capable of dissolving no greater than about 0.1 % by volume of water.
  • the low polarity solvent should be present in the composition in an amount which is effective to accomplish its cleaning function. This can be accomplished by including in the composition a minor amount of the low polarity solvent.
  • the low polarity solvent comprises from about 15 wt.% to about 40 wt.% of the composition.
  • Another constituent of the present cleaning composition is a high polarity solvent.
  • This constituent functions to 10 dissolve a variety of soils, for example, ionic residues, including fingerprints, particulate residues, water-soluble oils and other water-soluble soils.
  • the high polarity solvent has good solvency for water and water-like materials and is capable of dissolving at least about 10% water by volume.
  • the high polarity solvent of the present invention has little or no known tendency to cause depletion of the ozone layer. It is preferred that the high polarity solvent have an ozone depletion factor of no greater than about 0.05 and even more preferably of about 0.
  • high polarity solvents are alcohols, ethers, and ketones.
  • the high polarity solvent of the present composition is preferably selected from the group consisting of low molecular weight alcohols (1 to about 10 carbon atoms) and low molecular weight glycol ethers.
  • Preferred low molecular weight alcohols are those having from 1 to about 5 carbon atoms.
  • Preferred embodiments include methanol, ethanol, and n-propanol.
  • An especially preferred low molecular weight alcohol is isopropanol.
  • Preferred low molecular weight glycol ethers include propylene glycol ethers .
  • the high polarity solvent should be present in the composition in an amount which is effective to accomplish its cleaning function. This can be accomplished by including in the composition a minor amount of the high polarity solvent.
  • the high polarity solvent comprises from about 3 wt.% to about 12 wt.% of the composition.
  • the composition is substantially free of chlorinated hydrocarbon solvents, that is, amounts less than about 5 wt.%.
  • the composition contains less than 1 wt.% of chlorinated hydrocarbon solvent, and most preferably, it contains none of such material.
  • the nonflammable fluorinated compound, low polarity solvent, and high polarity solvent constituents of the cleaning composition of the present invention are preferably miscible with each other.
  • miscible is used herein in its usual sense to mean that the liquid fluorinated compound, the liquid low polarity solvent, and the liquid 11 high polarity solvent mix with each other to form a uniform blend, that is, to dissolve in each other.
  • a composition of this embodiment of the invention preferably comprises one uniform liquid phase.
  • Another important aspect of the present invention is that embodiments of the cleaning composition are compatible with a wide variety of substrates to be cleaned, including, for example, sensitive plastics and other materials which tend to be degraded by conventional solvents.
  • Embodiments of the composition are non-damaging to a wide range of materials, including metallic surfaces and plastic surfaces, for example, polycarbonates, acrylics, and acrylonitrile-butadiene-styrene terpolymer (ABS) .
  • ABS acrylonitrile-butadiene-styrene terpolymer
  • plastic-compatible is used herein to refer to embodiments of the composition of the present invention which do not degrade various types substrates that are cleaned with the composition.
  • a composition is "plastic-compatible" when it passes the following test.
  • a clean polycarbonate specimen about 1% " x 1 " and having a thickness of 3.15 mm is weighed on an analytical balance and the weight of the specimen is recorded. The specimen is then placed in the cleaning composition at room temperature for 10 minutes, removed therefrom, and dried. The weight of the specimen is remeasured and recorded after the weight has stabilized.
  • the cleaning composition is plastic-compatible when the weight changes of the specimens, if any, are no greater than about 1 wt.%, when the test specimens show no signs of crazing, and there are no other visible changes in the appearance of the specimens.
  • Examples of articles that can be cleaned effectively by utilizing the cleaning composition of the present invention include medical devices, circuit boards, painted articles, costume materials, live electrical circuits, aerospace/aircraft components, articles covered with fabric, vinyl, or leather, carpets, stainless steel appliances, 12 polycarbonate and polyacrylic windows, and also multiply articles that are together by adhesives.
  • Cleaning compositions within the scope of the present invention can be used to clean effectively from the substrates a wide variety of soils.
  • soil is used herein to include unwanted organic or inorganic materials that may be present on the substrate to be cleaned, including, for example, fingerprints, mineral oils, machining oils, silicone oils and other lubricants, rosin solder flux, hydraulic fluid, grease, waxes, particulate, and other manufacturing soils.
  • the soiled substrate is contacted with the cleaning composition for a time sufficient to remove the adherent soil, for example, about 30 seconds to about 10 minutes, depending on the nature of the soils and the manner of contacting the composition with the article to be cleaned.
  • Many techniques are known and are available to those skilled in the art for carrying out the contacting step of the present invention.
  • the use of any suitable technique can be used in the practice of the present invention.
  • the article can be immersed in the composition or sprayed with the composition.
  • the liquid cleaning composition can be at room temperature or at elevated temperature and cleaning can be accomplished at atmospheric pressure. Ultrasonic agitation may be used to help loosen the adherent soils from the contaminated substrates.
  • the cleaning composition may be heated to its boiling point.
  • the azeotropic cleaning composition has a single boiling point.
  • the most widely used compositions will have a boiling point in the range of about 120°F (49°C) to about 140°F (60°C) , but it should be understood that compositions within the scope of the present invention having boiling points outside of this range can be formulated.
  • Heating the azeotropic cleaning composition to its boiling point results in the creation of a vapor phase which overlies the boiling liquid cleaning composition.
  • the vapor in this phase comprises the nonflammable fluorinated compound, the low polarity solvent, and the high polarity solvent, each 13 present in the same proportion as present in the boiling liquid composition.
  • the vapor is non-combustible as a result of the presence of the nonflammable fluorinated compound which, as mentioned above, is present in a major amount relative to the other constituents, which may themselves be flammable.
  • the process involves the following steps: heating the liquid cleaning composition to its boiling point to form a vapor phase as described above, contacting the soiled substrate with the vapor phase and then with the boiling cleaning composition, withdrawing the substrate from the boiling cleaning composition and into the vapor phase, contacting the substrate with the vapor phase, and withdrawing the substrate from the vapor phase.
  • the cleaning system includes not only a container in which the cleaning composition is heated to its boiling point, but also another container (or sump) which is unheated and which contains condensed cleaning composition from the vapor, including vapor which overlies the unheated container.
  • the major cleaning is effected in the boiling composition and in the vapor, with additional cleaning being effected in the condensed cleaning composition which is clean relative to the boiling composition, the latter containing substantially higher amounts of "removed" soil than the former.
  • compositions of the aforementioned type that includes also a non-volatile functional material.
  • the term "functional" means that the material exhibits a useful property when it is present on the surface of a substrate.
  • the material may exhibit lubricating properties or form on the surface a hard or rubbery polymeric coating that has, for example, protective properties.
  • the functional material may be a liquid or a solid at room temperature and is soluble (or miscible) in the composition.
  • the functional material is non-volatile in that the material does not evaporate (if a liquid) or volatilize (if a solid) as the other constituents of the composition evaporate, 14 leaving behind on the surface of the substrate the nonvolatile material in either liquid or solid form and essentially free of the volatile constituents, that is, the nonflammable fluorinated compound, the low polarity solvent, and the high polarity solvent.
  • the non-volatile material will have a vapor pressure of no greater than about 0.005 millimeter of mercury (mm Hg) at 20°C.
  • non-volatile functional materials that can be used in the practice of the present invention include silicon-containing liquids such as polydimethylsiloxanes, amino functional silicones such as dimethoxysilyldimethylaminoethylaminopropyl silicone, clyclomethicone, di ethylpolysiloxane, organofunctional dimethylpolysiloxane, dimethicone copolyol, silanol, and silicone resins, polymeric adhesives and coating materials such as, for example, acrylate esters, and fluorocarbon and petroleum-based lubricants.
  • non-volatile functional material included in the composition will vary depending on the nature of the material and the use to be made thereof. It is believed that, for most applications, an amount within the range of about 1 to about 10 wt.% of the functional material will be sufficient.
  • the composition containing the non-volatile functional solvent is applied to the surface of an article.
  • the volatile constituents evaporate, for example, within about 1 to about 10 minutes,. or longer, leaving behind the functional material, for example, in the form of a thin liquid or solid coating.
  • An example of an application for use of this embodiment of the present invention includes the application of a silicone oil lubricant onto the surface of a medical device such as syringe needles, catheters, and surgical tools.
  • Other examples include application of a polymeric silicone coating to a medical device, deposition of a conformal coating onto a printed circuit assembly, and deposition of an adhesive onto a metal or plastic substrate.
  • compositions of the present invention are volatile in that 15 they are capable of evaporating at room temperature. Their vapor pressures are higher than the vapor pressure of the non-volatile functional material, indeed, typically substantially higher than the vapor pressure of the functional material.
  • the vapor pressures of herein exemplified volatile compounds range from about 4 to about 195 mm Hg at 20°C.
  • a compound having a vapor pressure outside of this range can be used as the volatile constituent of the composition, for example, a compound having a vapor pressure within the range of from about 0.01 to less than 760 mm Hg at 20°C.
  • Example 1 is illustrative and/or comparative, but not limiting of, the present invention. These examples provide methods of determining whether cleaning compositions are compatible with particular substrates. The designation of examples as comparative is not necessarily an indication that the examples represent prior art products or procedures.
  • Example 1 is illustrative and/or comparative, but not limiting of, the present invention. These examples provide methods of determining whether cleaning compositions are compatible with particular substrates. The designation of examples as comparative is not necessarily an indication that the examples represent prior art products or procedures. Example 1
  • HFE 7100 is a product of 3M and is a nonflammable hydrofluoroether which includes from 20-80% of methyl nonafluorobutyl ether and from 20-80% of methyl nonafluoroisobutyl ether.
  • About 70 parts by weight of HFE 7100, about 25 parts by weight of a low polarity solvent consisting of n-propyl bromide, and about 5 parts by weight of a high polarity solvent consisting of isopropyl alcohol were combined in a vessel at room temperature to form a liquid cleaning composition according to the present invention.
  • HFE 7100 About 54 parts by weight of HFE 7100, about 36 parts by weight of a low polarity solvent consisting of octamethyltrisiloxane, and about 10 parts by weight of a high polarity solvent consisting of isopropyl alcohol were combined in a vessel at room temperature to form a liquid cleaning composition according to the present invention.
  • Example C-l and C-2 below are illustrative of comparative cleaning compositions which are used in the cleaning evaluations discussed below.
  • Example C-l The comparative cleaning composition of Example C-l is described below in Table 3.
  • the comparative cleaning composition of Example C-2 comprises 100% liquid n-propyl bromide. 17
  • Polypropylene injection molded parts were tested for compatibility with the compositions of Examples 1 and C-2.
  • the polypropylene samples were not contaminated with any soils, but were tested for compatibility between the polypropylene and the cleaning compositions.
  • the compatibility testing was performed in Branson BTC 200 vapor degreasers containing either the composition of Example 1 or Example C-2.
  • the vapor degreaser contains two sumps, one with heat and one unheated with ultrasonics and condensing coils. Cleaning composition in the heated sump is heated to boiling.
  • the vapor from the boiling composition condenses on the condensing coils and mixes with water extracted from the atmosphere. Water and condensate collect in a trough and pass to a water separator.
  • Water is removed by the water separator (it floats to the top of the cleaning composition and is drained off) .
  • Pure cleaning composition overflows into the ultrasonic sump.
  • Cleaning composition mixes with the soil removed by ultrasonic cleaning and "dirty" cleaning composition overflows into the boiling sump (all soil ends up in the boiling sump) .
  • the following testing method was utilized. The samples were weighed on an analytical balance. For both compositions, the samples were lowered into the vapor above the boil sump for 1 minute, immersed in the rinse sump for the time indicated in the table, and then raised into the vapor for 20 seconds. The parts were then raised through the freeboard and out of the machine. Ultrasonics were used in the rinse sump for purposes of simulating cleaning when ultrasonics would be used to loosen adherent soils from the contaminated substrates.
  • Example 1 For the composition of Example 1, the temperature of the rinse sump was 120°F (49°C) and the temperature of the boil sump and the vapor was 128°F (53°C) .
  • the temperature of the rinse sump was 150°F 18
  • Example 1 The samples which were immersed in the cleaning composition of the present invention, Example 1, gained very little weight and showed no signs of degrading.
  • the samples which were immersed in the comparative cleaning composition of Example C-2 gained more weight, and one of these samples, sample D, turned gray at the mold injection point.
  • the above results illustrate that the composition of the present invention is more compatible with the polypropylene parts than the comparative composition of Example C-2.
  • Tecoflex tubes made of polyurethane were tested for compatibility with the composition of Example 1.
  • the compatibility testing was performed in a Branson BTC 200 vapor degreaser containing the composition of Example 1. The following method was utilized.
  • the Tecoflex tubes were cut into small sections and weighed. They were then fixtured in a wire mesh basket. The basket was lowered into the rinse sump for the time indicated in the table, raised into the vapor for 20 seconds, and then raised through the freeboard and out of the machine. The temperature of the rinse sump was 124°F (51°C); the temperature of the boil sump and the vapor was 128°F (53°C). Ultrasonics were used in the rinse sump for each test. The 19 samples were weighed immediately after completion of the testing and again after three hours.
  • Tecoflex tubes made of polyurethane were tested for compatibility with the composition of Example 1.
  • the compatibility testing was performed in a Branson 125 vapor degreaser containing the composition of Example 1. The following method was utilized for testing.
  • the tubes were cut into small sections and weighed. They were then fixtured in a wire mesh basket. The basket was lowered into the vapor above the boil sump for 1 minute, then immersed in the rinse sump for 2 minutes, then raised into the vapor for 20 seconds, and finally raised through the freeboard and out of the machine.
  • the rinse sump temperature was 105°F (41°C) ; the boil sump and vapor temperature was 20
  • the "swelling" characteristics of the composition of the present invention can be used to advantage in the following type of application.
  • Plastic tubing for example, silicone or polyurethane tubing
  • the composition is soaked in the composition to increase its diameter.
  • the tubing is placed over a needle, wire, or some other object of smaller diameter.
  • the tubing shrinks around the wire to fit snugly, for example, in less than 25 minutes.
  • An example of an application in which this swelling/shrinking process can be used is one involving medical tubing.
  • catheters with hubs made of pellethane polyurethane and lumens made of tecothane polyurethane were tested for compatibility with the compositions of Examples 1 and C-l.
  • the catheter samples were contaminated with silicone oil. Cleaning and compatibility testing were performed in a Branson BTC 200 vapor degreasers containing either the composition of Example 21
  • the samples were weighed on an analytical balance and were then fixtured in a wire mesh basket.
  • the basket was lowered into the rinse sump for the time indicated in the table, raised into the vapor for 20 seconds, and then raised through the freeboard and out of the vapor degreaser.
  • Example 1 For the composition of Example 1 the temperature of the boil sump and the vapor was 130°F (54°C) and the temperature of the rinse sump was 123°F (51°C) .
  • Example C-l For the composition of Example C-l, the temperature of the boil sump and the vapor was 110°F (43°C) and the temperature of the rinse sump was 95°F (35°C) . Ultrasonics were not utilized in the vapor degreaser for these tests.
  • the comparative cleaning composition attacked the catheters, as it caused the color in the tips to fade.
  • the cleaning composition of the present invention cleaned well and was compatible with the catheters, as it caused no fading of color.
  • the varnish samples were weighed on an analytical balance and were then immersed in the rinse sump of the vapor degreaser.
  • the temperature of the rinse sump containing the 23 composition of Example C-l was 105°F (41°C) and the temperature of the rinse sump containing the composition of Example 1 was 123°F (51°C) .
  • the samples were removed from the rinse sump, weighed, and inspected for any physical changes.
  • Example 1 is more compatible with the varnishes tested than is the comparative composition of Example C-l, as the comparative composition attacked the varnish coated lids.
  • Another substrate suitable for cleaning with the cleaning composition of the present invention hardened globules of polyurethane (Solithane 113/Hughes) , was tested for compatibility with the compositions of Examples 1 and C- 1. Most of the globules were attached to aluminum foil to test the adhesive properties of the polyurethane after being subjected to the cleaning compositions. The testing was performed by immersing the samples in rinse sumps of Branson BTC 200 vapor degreasers which contained the composition of either Example 1 or Example C-l. The following method was utilized.
  • the temperature of the rinse sump containing the composition of Example C-l was 100°F (38°C) and the temperature of the rinse sump containing the composition of Example 1 was 122°F (50°C) . After 10 minutes or 60 minutes, the samples were removed from the rinse sump, weighed and inspected for any physical changes. The results of these compatibility evaluations are documented in the following table.
  • Example 1 The composition of Example 1 was tested for its ability to clean silicone soils (DC-510 and DC-200) from glass plates. The cleaning tests were performed in a Branson BTC 200 vapor degreaser containing the composition of Example 1. The following method was utilized.
  • Example 1 is effective in removing silicone soils from contaminated glass substrates.
  • Example 3 is illustrative of a composition which is within the scope of the present invention and which includes a non-volatile functional material.
  • Example 3 is illustrative of a composition which is within the scope of the present invention and which includes a non-volatile functional material.
  • a composition comprising 2 wt.% of Dow Corning 360 polydimethylsiloxane fluid, 52.9 wt.% of 3M HFE 7100, 35.3 wt.% of octamethyltrisiloxane, and 9.8 wt.% of isopropyl alcohol was formulated.
  • Stainless steel surgical scalpel blades were immersed into the composition in a pan at room temperature. The blades were removed from the pan and allowed to set for about 30 minutes, after which all of the volatile constituents of the composition evaporated.
  • a lubricating film of silicone film in continuous form and having a thickness of about 1 to 2 mils (0.001 to 0.002 inch) remained on the blades.

Abstract

La présente invention concerne une composition liquide pyrophobe azéotrope présentant des propriétés nettoyantes, pratiquement exempte de solvant d'hydrocarbure chloré, exprimant un facteur d'appauvrissement de la couche d'ozone ne dépassant pas 0,15 environ, et comprenant des composants volatiles dont le facteur d'appauvrissement de la couche d'ozone de chacun ne dépasse pas 0,15 environ, ces composants étant: (a) un composé fluoré pyrophobe liquide, (b) un solvant à faible polarité pouvant dissoudre environ 10 % d'eau par volume maximum, et enfin, (c) un solvant à forte polarité pouvant dissoudre au moins 10 % d'eau par volume. Cette invention concerne par ailleurs un procédé permettant de nettoyer la surface d'un article d'éventuelles salissures en utilisant cette composition, une composition de ce type renfermant une substance active non volatile dissoute pouvant être déposée sur une surface, comme un film mince de lubrifiant par exemple, en appliquant la composition sur la surface et en procédant à l'évaporation des composants volatils de la composition.
EP99906726A 1998-02-03 1999-02-03 Composition a base organique Withdrawn EP1068289A4 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
US1777998A 1998-02-03 1998-02-03
US17779 1998-02-03
PCT/US1999/002376 WO1999038947A1 (fr) 1998-02-03 1999-02-03 Composition a base organique

Publications (2)

Publication Number Publication Date
EP1068289A1 EP1068289A1 (fr) 2001-01-17
EP1068289A4 true EP1068289A4 (fr) 2003-04-02

Family

ID=21784506

Family Applications (1)

Application Number Title Priority Date Filing Date
EP99906726A Withdrawn EP1068289A4 (fr) 1998-02-03 1999-02-03 Composition a base organique

Country Status (5)

Country Link
EP (1) EP1068289A4 (fr)
AU (1) AU2656999A (fr)
CA (1) CA2319462A1 (fr)
IL (1) IL137674A0 (fr)
WO (1) WO1999038947A1 (fr)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6022842A (en) * 1998-02-11 2000-02-08 3M Innovative Properties Company Azeotrope-like compositions including perfluorobutyl methyl ether, 1- bromopropane and alcohol
EP1160313A1 (fr) 2000-06-02 2001-12-05 The Procter & Gamble Company Composition et disposatif pour nettoyer les appareils électroniques
JP2006117878A (ja) * 2004-10-25 2006-05-11 Three M Innovative Properties Co パーフルオロエラストマー用非粘着処理剤のための溶剤及びそれを用いた非粘着処理剤溶液
US9332982B2 (en) * 2009-11-09 2016-05-10 Ethicon, Llc Surgical needle coatings and methods

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1999002616A1 (fr) * 1997-07-09 1999-01-21 Great Lakes Chemical Corporation Compositions azeotropes, et du type azeotrope, de 1-bromopropane et d'hydrocarbures a haute teneur en fluor

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5454970A (en) * 1994-08-11 1995-10-03 Dow Corning Corporation Octamethyltrisiloxane containing azeotropes
KR100427738B1 (ko) * 1995-05-16 2004-07-16 미네소타 마이닝 앤드 매뉴팩춰링 캄파니 공비혼합물형조성물및그의용도
EP0826028B1 (fr) * 1995-05-16 2008-09-24 Minnesota Mining And Manufacturing Company Compositions du type azeotrope et leurs applications

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1999002616A1 (fr) * 1997-07-09 1999-01-21 Great Lakes Chemical Corporation Compositions azeotropes, et du type azeotrope, de 1-bromopropane et d'hydrocarbures a haute teneur en fluor

Also Published As

Publication number Publication date
AU2656999A (en) 1999-08-16
IL137674A0 (en) 2001-10-31
WO1999038947A1 (fr) 1999-08-05
EP1068289A1 (fr) 2001-01-17
CA2319462A1 (fr) 1999-08-05

Similar Documents

Publication Publication Date Title
EP2683850B1 (fr) Compositions azéotropiques et analogues à des azéotropes de méthylperfluorohepténéthers et de trans-dichloroéthylène et leurs utilisations
EP3294854B1 (fr) Compositions ternaires d'éthers méthyliques de perfluoroheptène, et de trans-1,2-dichloroéthylène et leurs utilisations
EP3143118B1 (fr) Compositions d'éthers méthyliques de perfluoroheptène, de 1,1,1,2,2,3,4,5,5,5-décafluoropentane et de trans-1,2-dichloroéthylène et leurs utilisations
US11124744B2 (en) Compositions containing trans-1,2-dichloroethylene and a hydrofluoroether, and methods of using the same
KR20100112618A (ko) 1,1,1,2,3,3-헥사플루오로-3-메톡시-프로판 및 트랜스-1,2-다이클로로에틸렌을 갖는 3성분 공비혼합물-유사 조성물
WO2012006430A1 (fr) Mélanges azéotropes et quasi-azéotropes d'hexaméthyldisiloxane et de carbonate de diméthyle et procédés d'utilisation
JP3219767B2 (ja) １，１，２，３，３−ペンタフルオロプロパンの共沸混合物様組成物
TWI279261B (en) Compositions and methods for cleaning contaminated articles
KR20160145620A (ko) 용매 증기상 디그리싱 및 디플럭싱 조성물, 방법, 장치 및 시스템
WO2012082184A1 (fr) Compositions azéotropiques et analogues à des compositions azéotropiques de méthyl perfluoroheptène éthers et d'heptane et leurs utilisations
EP2598594A1 (fr) Compositions azéotropiques et de type azéotropique à base d'éthers méthyl- perfluoroheptène et de méthanol et utilisations correspondantes
EP1068289A1 (fr) Composition a base organique
JP4047930B2 (ja) １，１，１，３，３―ペンタフルオロプロパン及びｃ▲下１▼〜ｃ▲下３▼アルコールの共沸混合物様組成物
EP0621907A1 (fr) Procede utilise pour le nettoyage d'objets
WO2012087381A1 (fr) Compositions azéotropiques et pseudo-azéotropiques de méthyl perfluoroheptène éthers et d'éthanol et leurs utilisations
WO1993022416A1 (fr) Compositions, analogues a l'azeotrope, a base de 1-h-perfluorohexane et trifluorethanol ou n-propanol
CN112074591B (zh) 包含全氟庚烯的三元和四元共沸物组合物和类共沸物组合物
JP2001503787A (ja) デカフルオロペンタン組成物
WO1999006162A1 (fr) Technique de nettoyage/revetement d'un substrat
JP2000510883A (ja) デカフルオロペンタン組成物
JPH0913083A (ja) 洗浄剤組成物およびそれを用いる洗浄方法
JPH03258734A (ja) フッ素化塩素化炭化水素系混合溶剤組成物

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

17P Request for examination filed

Effective date: 20000904

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): AT BE CH DE DK ES FI FR GB GR IE IT LI NL SE

RIC1 Information provided on ipc code assigned before grant

Free format text: 7C 11D 7/50 A, 7C 23G 5/00 B, 7C 23G 5/028 B, 7C 23G 5/032 B

A4 Supplementary search report drawn up and despatched

Effective date: 20030217

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN

18D Application deemed to be withdrawn

Effective date: 20030507